Hello there @donnadavisart :)
Great comment! I think high expectations might also stem from lack of understanding. For example, Dr Bjarne Holmes from Heriot Watt University in Edinburgh, conducted a laborious, but very interesting research on the role Hollywood romantic movies play in influencing peoples relationship's expectation. The results are incredible. People are so naive!
And of course, as you observed, this permeates other aspects of people's lives too, including the incessant pursuit for happiness!
Thank you for stopping by.
I wish you a wonderful weekend :)